Quick question how do you prove that lines are parallel? I can't seem to find that on here and i really need to know!

If you draw a line through the 2 lines, it should be perpendicular to both lines.

I am having trouble remember these. Anyone have any tips to help me remember? Edit : Case Closed. But thank you Taylyn for answering my question! Everyone have a nice day.

Yes. In the word Parallel, the double L's are side by side, and if going on in a straight line, would never touch. So, the double L's in Parallel are, well, parallel. Use those as an example to help you remember what parallel means.

Are perpendicular any kind of lines that intersect each other? I've got to know this!

Yes, perpendicular lines intersect each other with 4 90-degree angles.

Does a perpendicular line ALWAYS have to be 90 degrees? Just a Question

Yes, a perpendicular line must always be at a 90-degree angle

What happens if a Parallel line goes through a regular line so that make it perpendicular so what is that.

If the parallel line goes through the line, the lines will not be parallel anymore, so they will only be perpendicular if they meet at a right angle.

Why does the human brain have to know what geometry is?

So it can identify shapes and measure things. It also helps make the human brain grow. Hope this helps :D

does perpendicular line have to be the exactly 90 degrees?

It always have to be exactly at a right angle, and a right angle is always 90 degrees so yes.

what is are perpendicular and parallel lines

Perpendicular means they make a right angle. (A 45 degree angle) Parallel means they will go on forever and never meet.

Main content

4th grade

Course: 4th grade > Unit 11

Lesson 3: Parallel and perpendicular

Parallel and perpendicular lines review

CCSS.Math:

4.G.A.1

Google Classroom

Review the basics of parallel and perpendicular lines. Identify and draw parallel and perpendicular lines in some practice problems.

What are start color #1fab54, start text, p, e, r, p, e, n, d, i, c, u, l, a, r, space, l, i, n, e, s, end text, end color #1fab54 and start color #7854ab, start text, p, a, r, a, l, l, e, l, space, l, i, n, e, s, end text, end color #7854ab?

start color #1fab54, start text, P, e, r, p, e, n, d, i, c, u, l, a, r, space, l, i, n, e, s, end text, end color #1fab54 are lines that meet at right angles.

start color #7854ab, start text, P, a, r, a, l, l, e, l, space, l, i, n, e, s, end text, end color #7854ab are always the same distance apart from each other — no matter how far they are extended, they will never meet.

Want to learn more about parallel and perpendicular lines? Check out this video.

Practice set 1: Identify parallel and perpendicular lines

Problem 1A

Current

Which of the following pairs of sides in triangle, G, A, Z are perpendicular?

(Choice A)
start overline, G, A, end overline and start overline, A, Z, end overline
(Choice B)
start overline, A, Z, end overline and start overline, G, Z, end overline
(Choice C)
start overline, G, A, end overline and start overline, G, Z, end overline
(Choice D)
No sides are perpendicular.

Want to try more problems like this? Check out this exercise.

Practice set 2: Draw parallel and perpendicular lines

Problem 2A

Current

Any pair of points can be connected by a line.

Use the green line to connect the pair of black points that makes a line parallel to the blue line segment.

Want to try more problems like this? Check out this exercise.

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Evan Johnson
Posted 7 years ago. Direct link to Evan Johnson's post “Quick question how do you...”
Quick question how do you prove that lines are parallel? I can't seem to find that on here and i really need to know!
Button navigates to signup pageComment on Evan Johnson's post “Quick question how do you...”
(182 votes)
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- Maxwell
  Posted 6 years ago. Direct link to Maxwell's post “If you draw a line throug...”
  If you draw a line through the 2 lines, it should be perpendicular to both lines.
  Comment on Maxwell's post “If you draw a line throug...”
  (32 votes)
𝚙𝚞𝚙𝚜𝚒𝚖𝚊𝚗 🐶🥤
Posted 5 years ago. Direct link to 𝚙𝚞𝚙𝚜𝚒𝚖𝚊𝚗 🐶🥤's post “I am having trouble remem...”
I am having trouble remember these. Anyone have any tips to help me remember?

Edit : Case Closed. But thank you Taylyn for answering my question! Everyone have a nice day.
Button navigates to signup pageComment on 𝚙𝚞𝚙𝚜𝚒𝚖𝚊𝚗 🐶🥤's post “I am having trouble remem...”
(35 votes)
Answer
- Taylyn
  Posted 5 years ago. Direct link to Taylyn's post “Yes. In the word Parallel...”
  Yes. In the word Parallel, the double L's are side by side, and if going on in a straight line, would never touch. So, the double L's in Parallel are, well, parallel. Use those as an example to help you remember what parallel means.
  Comment on Taylyn's post “Yes. In the word Parallel...”
  (55 votes)
Susanparrot
Posted 6 years ago. Direct link to Susanparrot's post “Are perpendicular any ki...”
Are perpendicular any kind of lines that intersect each other? I've got to know this!
Button navigates to signup pageComment on Susanparrot's post “Are perpendicular any ki...”
(22 votes)
Answer
- Marc Joe
  Posted 5 years ago. Direct link to Marc Joe's post “Yes, perpendicular lines ...”
  Yes, perpendicular lines intersect each other with 4 90-degree angles.
  Comment on Marc Joe's post “Yes, perpendicular lines ...”
  (3 votes)
randy k
Posted 5 years ago. Direct link to randy k's post “Does a perpendicular line...”
Does a perpendicular line ALWAYS have to be 90 degrees? Just a Question
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(14 votes)
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- Cabbage
  Posted 5 years ago. Direct link to Cabbage's post “Yes, a perpendicular line...”
  Yes, a perpendicular line must always be at a 90-degree angle
  Comment on Cabbage's post “Yes, a perpendicular line...”
  (26 votes)
Zhaojay57682
Posted 6 years ago. Direct link to Zhaojay57682's post “does perpendicular line h...”
does perpendicular line have to be the exactly 90 degrees?
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(7 votes)
Answer
- Arzal
  Posted 3 years ago. Direct link to Arzal's post “It always have to be exac...”
  It always have to be exactly at a right angle, and a right angle is always 90 degrees so yes.
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  (2 votes)
ger1
Posted 5 years ago. Direct link to ger1's post “What happens if a Paralle...”
What happens if a Parallel line goes through a regular line so that make it perpendicular so what is that.
Button navigates to signup pageComment on ger1's post “What happens if a Paralle...”
(11 votes)
Answer
- jessica_ghai
  Posted 5 years ago. Direct link to jessica_ghai's post “If the parallel line goes...”
  If the parallel line goes through the line, the lines will not be parallel anymore, so they will only be perpendicular if they meet at a right angle.
  Comment on jessica_ghai's post “If the parallel line goes...”
  (7 votes)
warinner
Posted 2 years ago. Direct link to warinner's post “Why does the human brain ...”
Why does the human brain have to know what geometry is?
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(8 votes)
Answer
- Sophia Acevedo
  Posted 2 years ago. Direct link to Sophia Acevedo's post “So it can identify shapes...”
  So it can identify shapes and measure things. It also helps make the human brain grow.
  
  Hope this helps :D
  Button navigates to signup page
  (13 votes)
Kathya DelCid
Posted 5 years ago. Direct link to Kathya DelCid's post “How to know if two lines ...”
How to know if two lines are perpendicular if there are also lines that are connected and they aren't perpendicular?
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(5 votes)
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Pretty.Mavuka
Posted 4 years ago. Direct link to Pretty.Mavuka's post “what is are perpendicular...”
what is are perpendicular and parallel lines
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(3 votes)
Answer
- Martin
  Posted 4 years ago. Direct link to Martin's post “Perpendicular means they ...”
  Perpendicular means they make a right angle. (A 45 degree angle) Parallel means they will go on forever and never meet.
  Comment on Martin's post “Perpendicular means they ...”
  (6 votes)
Jorden
Posted 3 months ago. Direct link to Jorden's post “Is cereal a soup?”
Is cereal a soup?
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